一个等腰三角形周长是57厘米,其中底边长是15厘米,它的一条腰长是多少厘米?
(57-15)÷2=21(厘米)
血清转铁蛋白增高的是()
A.缺铁性贫血
B.肾病综合征
C.再生障碍性贫血
D.营养不良
E.恶性肿瘤
Which of the following sentences conveys a fact?
A.Maryandhersonmustbehomebynow.
B.Carelessreadingmustgivepoorresults.
C.It’sgettinglate,andImustleavenow.
D.Hemustbeworkinglateattheoffice.